| 摘要 |
A condensate pump system for collecting condensate liquid within a reservoir 50 and pumping out the liquid to predetermined levels comprising a reservoir 50, a, a pump 10, a transistor 20, a relay 30, and a low voltage direct current power source wherein a sensing voltage is introduced (a power probe 1 or reservoir 50) into the condensate liquid such that the liquid level is detected via the two sensing probe conductors (hold probe 2 and on probe 3) within the reservoir 50 transferring the sensing voltage to the base leg 20B of the transistor 20 which in turn powers a relay 30 that powers the pump 10 when the energized liquid is contacting the upper conductor 3 at the desired maximum level 4 and disconnects the pump 10 from power when the energized liquid no longer contacts the lower conductor 2 at the desired minimal level 5. |
| 主权项 |
1. A condensate pump system for collecting condensate liquid within a reservoir 50 and pumping out the liquid to predetermined levels comprising:
a non-conductive reservoir 50 for collecting the condensate liquid; a bipolar transistor 20 having a transistor base leg 20B, transistor emitter leg 20E, and a transistor collector leg 20C, said collector leg 20C connected to a low voltage power source; a pump 10 connected to said low voltage power source through a normally open pump-switch 32; an on-probe 3 connected to said transistor base leg 20B, said on-probe 3 having a conductor located within the non-conductive reservoir 50 at the desired maximum level 4; a hold-probe 2 connected to said transistor base leg 20B through a normally open hold-switch 31, said hold-probe 2 having a conductor located within the non-conductive reservoir 50 at the desired minimum level 5; a power-probe 1 connected to said low voltage direct current power source, said power-probe 1 having a conductor located within the non-conductive reservoir 50 below the desired minimal fluid level thereby energizing the condensate liquid with a sensing voltage; a relay 30 activated by said transistor emitter leg 20E closes said hold-switch 31 and said pump-switch 32 when the transistor base leg 20B receives sensing voltage from energized liquid contacting said on-probe 3 conductor, whereby said relay 30 remains activated while the transistor base leg 20B receives sensing voltage from liquid contacting said hold-probe 2 conductor, said relay 30 deactivates upon the liquid level falling below the hold-probe 2 conductor, and thus the pump 10 is connected to power upon the liquid reaching the desired maximum level 4 and disconnects from power upon the liquid reaching the desired minimum level 5.
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